Patents by Inventor Juergen Patzlaff

Juergen Patzlaff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for continous redox adjustment in azoic couplings
    Publication number: 20040131507
    Abstract: The invention relates to a method for adjusting the dosage of reaction components in a continuous azoic coupling reaction characterized in that the redox potential of the reaction mixture is measured online in the main flow after it exits from a continually operated reactor in a flow measurement cell with the aid of a rotating redox electrode which is arranged crosswise in relation to the direction of flow of the reaction mixture. The invention also relates to a flow measurement cell for carrying out said method, characterized by the following: a rotating redox electrode (1) which is arranged approximately in the middle of the flow pipe (2) of the flow measurement cell in a crosswise position with relation to the direction of flow of the reaction mixture and rotatably mounted in a sliding contact (3) for picking up a signal; a rod-shaped body (4) which enters into contact with the rotating redox electrode and which has a cleaning effect; a reference electrode (5) and a pH electrode (6).
    Type: Application
    Filed: February 17, 2004
    Publication date: July 8, 2004
    Inventors: Klaus Saitmacher, Hans-Peter Gabski, Harald Heider, Juergen Patzlaff, Christian Wille, Joerg Jung
  • Preparation of diketopyrrolopyrrole pigments
    Patent number: 6723138
    Abstract: A process for preparing diketopyrrolopyrrole pigments comprises conducting the elementary steps of pigment synthesis (reaction and hydrolysis) in a miniaturized continuous reactor.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: April 20, 2004
    Assignee: Clariant International Ltd.
    Inventors: Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff
  • Preparation of alcoholic solutions of alkali metal alkoxides
    Patent number: 6616859
    Abstract: A process for preparing alcoholic solutions of alkali metal alkoxides. The process includes reacting an alkali metal with an alcohol in a microreactor wherein the microreactor provides laminer flow.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: September 9, 2003
    Assignee: Clariant International Ltd.
    Inventors: Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff
  • Preparation of diketopyrrolopyrrole pigments
    Publication number: 20030158410
    Abstract: A process for preparing diketopyrrolopyrrole pigments comprises conducting the elementary steps of pigment synthesis (reaction and hydrolysis) in a miniaturized continuous reactor.
    Type: Application
    Filed: March 6, 2003
    Publication date: August 21, 2003
    Inventors: Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff
  • Preparation of diketopyrrolopyrrole pigments
    Patent number: 6566519
    Abstract: A process for preparing diketopyrrolopyrrole pigments comprises conducting the elementary steps of pigment synthesis (reaction and hydrolysis) in a miniaturized continuous reactor.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: May 20, 2003
    Assignee: Clariant International Ltd.
    Inventors: Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff
  • Preparation of diketopyrrolopyrrole pigments
    Publication number: 20020010331
    Abstract: A process for preparing diketopyrrolopyrrole pigments comprises conducting the elementary steps of pigment synthesis (reaction and hydrolysis) in a miniaturized continuous reactor.
    Type: Application
    Filed: June 5, 2001
    Publication date: January 24, 2002
    Applicant: Clariant GmbH
    Inventors: Uwe Nickel, Leonhard Unverdorben, Joachim Weber, Erwin Dietz, Juergen Patzlaff